N-{8 3-trifluoromethyl-4-chlorophenyl{9 -carbamates

ABSTRACT

The invention relates to compounds of the general formula WHEREIN R1 represents an aralkyl or aralkenyl residue or a phenyl radical having four or five substituents or a five- to six-membered heterocycle which may be bound over an alkyl residue. The compounds are used for combating various types of pests, preferably bacteria and fungi.

United States Patent Hubele et al. [451 July 11, 1972 [54] N-[3-TRIFLUOROMETHYL-4- Primary Examiner-Alex Maze] CHLOR PHENYL AM Assistant Examiner--Bernard Dentz 0 B ATES Attorney-Harry Goldsmith, Joseph G. Kolodny, Bryant W. [72] Inventors: Adolf Hubele, Riehen; Otto Rohr, Therwil, Brennan and Edward J. Sites both of Switzerland |73| 'Assignec: Ciba-Geigy Corporation [57] ABSTRACT 221 Filed Feb 4 I969 The invention relates to compounds of the general formula [2]] Appl. No.: 796,571 (3 F3 30 Foreign Application Priority Data 0 W021 Feb. 6, 1968 Switzerland ..l765/68 wherein R represents an aralkyl or aralkenyl residue or a 52 US. Cl ..260/47l, 260/347.4, 260/295, Phenyl radical having four or five subsliwems or a to 424/2 5 424/300 424 2 3 252 10 252 107 memberecl heterocycle which may be bound over an alkyl 51 rm. Cl ..C07c 101 00 residue The compounds are used for combating various, yp 58 Field of Search ..260/471 of Pests, Preferably bacteria and fungi- [56] References Cited UNITED STATES PATENTS 6 Claims, N0 Drawings 3,308,018 3/1967 Gier ..260/47l N-[ 3-TRIFLUOROMETHYL-4-CHLOROPHENYL1- CARBAMATES in which R, represents an aralkyl or aralkenyl radical or a phenyl radical having four or five substituents selected from halogen, an alkyl, alkoxy and/or nitro group, or a fiveto sixmembered heterocyclic radical that may be optionally bound over an alkyl radical. The preparation may contain one or more of the following additives: a solvent, a diluent, a dispersant, a wetting agent, an adhesive as well as other known pesticides.

In a narrower sense, compounds of Formula I are used as active substances in which R represents a benzyl radical optionally substituted by halogen and/or NO,. or a phenyl radical having four or five substituents selected from halogen, an alkyl, alkoxy and/or nitro group or a fiveor sixmembered heterocyclic radical that is bound over an alkyl radical.

As examples of especially active groups for combating bacteria and fungi those of Compound Il may be mentioned:

in which n 4 or 5 and Z represents the substituents CH:,, OCH Cl, Br, -NO which may be the same or different from one another.

Among these, the compounds of the formulas are particularly effective active substances in combating lower organisms.

To the particularly effective type of compound there moreover belong those of the Formula (III) in which n 0 or I and R represents an aromatic radical.

The active substances of Formula (I) have an outstanding effectiveness against plant-pathogenic bacteria and fungi, e.g. Piricularia oryzae ("rice blast). In addition to these properties they have a considerable effect against insects, for example soil insects or storage pests, against gastropodes, nematodes, particularly plant nematodes, such as Panagrellus redivivus, and can be used in certain concentrations against undesirable plants. They also show an activity against human and animal pathogenic helminths, for example trematodes and cestodes, as well as against arachnoids (spiders, mites, ticks etc.).

The compounds of Formula (I) may be prepared by the methods known for the preparation of carbamates by reacting araliphatic or heterocyclic hydroxyl compounds or phenols of the formula HO-R a. with para-chloro-meta-trifluoromethylphenyl isocyanate in substance, in protected form (as adduct with NaHSO or in situ,

b. or with para-chloro-meta-trifluoromethylphenyl carbamic acid halide obtained by reacting para-chloro-metatrifluoroaniline and haloformic acid ester.

The active substances of the present invention have antimicrobic, particularly antibacterial properties, for example against Gram-positive organisms, such as Staph. aureus as well as against acid-resistant bacteria, such as M. tuberculosis.

in aqueous dispersion they have an affinity for keratin fibers and protect the treated material from destruction by larvae of small butterflies (moths) and certain kinds of coleoptera (for example larvae of Attagenus or Anthrenus). The carbamates of Formula (I) are suitable for disinfection purposes and for the disinfecting cleaning of articles, for example of cellulosecontaining material. Such compounds can be processed to textile detergents and toilet soaps.

It is particularly advantageous that the compounds of Formula (I) do not show any toxic side-effects towards warmblooded animals in the concentrations required for disinfection. This makes it possible to use the new compounds for combating harmful organisms on a broad basis, for example for the protection of timber, for preserving various industrial products, for protecting fibrous materials against harmful microorganisms, for preserving agricultural products, as disinfectants in veterinary medicine, in general hygiene and body care.

it is of particular importance that the compounds of the invention do not lose their bactericidal and fungicidal activity in the presence of albuminous substances and soaps. The new compounds do not have an objectionable odor of their own and are well tolerated, at least by healthy skin.

Among the industrial products which may be preserved and/or disinfected with the help of the disinfectants according to the invention, the following may be selected as examples: textile assistants or finishing agents, glues, binders, paints, thickeners, dyeing or printing pastes and similar preparations based on organic and inorganic dyestutfs or pigments, including those which contain casein or other organic compounds as admixtures. Wall and ceiling paints, for example those containing an albuminous color binder, are also protected against attack by pests by adding the new compounds.

Furthermore, the new compounds may be used for the protection of fibers and textiles by being absorbed on natural or synthetic fibers and there developing a durable action against harmful organisms, for example fungi, bacteria and insects. The compounds may be added.before, simultaneously, or after treatment of these textiles with other substances, for example dyeing or printing pastes, finishing agents and the like. These compounds are .in special measure able to protect wool fibers against moths and other ingestion pests. They show, for example, an excellent activity against moth larvae when applied to the fiber from an acetone solution or after absorption on the fiber from an aqueous bath in the presence of an emulsifier.

The compounds of Formula (I) may also be used as preservatives in the cellulose and paper industry, inter alia for preventing the known slime formation caused by microorganby combining the compounds according to the invention with detergent and/or surface-active substances. The compounds of the Formula (I) may, for example, by incorporated into soaps or be combined with soap-free detergents and/or surface-active substances, or they may be combined with mix- 5 Br CH 167-16!) tures of soaps and soap free detergents. j I

The invention relates therefore also to the use of detergents -Br and cleansing agents which contain as active component a compound of Formula (I), and also to making textile and non- 5 Br textile materials bacteria-resistant. 6 Br 150452 In most cases textile materials of synthetic or natural origin l are protected against infestation by bacteria by a content of 0.1 to 3 percent of active substance. The active substance may be used together with other textile assistants, such as finishing agents, anti-creasing dressings etc. 7 Br Br 167468 The preparations of the invention that contain the compounds of Formula (I) may also be employed as cleansing agents in industry or in the household, as well as in the food industry, e.g. dairies, breweries abattoirs, in agriculture and in Br E veterinary hygiene.

In general, the application forms correspond to the ordinary 8 CH CH5 5 formulations of pesticides; for example preparations that con- 9 C1 7!). 5-81 tain the compounds of Formula (I) may also contain additives (k such as carriers, solvents, diluents, dispersants, wetting agents -C 2 l or adhesives as well as other pesticides.

The following Examples illustrate the invention. 1724.

CH2 Example 1 75 Parts by weight of pentachlorphenol in 300 parts by 1 volume of acetonitrile and 67 parts by weight of p-chloro-mtrifluoromethylphenyl isocyanate in 100 parts by volume of 173. 5-175 acetonitrile are mixed at 50 C and 0.1 part of triethylenediamine is added. The reaction mixture is allowed to stand for 3 hours at room temperature, then cooled and the 12 OIL-CH1 113-115 product obtained is filtered off. CH2

13 1625-1 .5 c1@NH-coo c1 l Compound No. 1

4O 14 ZOE-209.5 Melting point: 162- 164 C (from toluene). In an analogous manner the following compounds of the type 0 3 ClNHCO-ORr 16 82-84 may be prepared: -CH;

\r r 17 on on (H-( Compound No. R; poi ntf 2 I 1 01 pi 162-164 Decornp.

I I EXAMPLE 2 C1 C1 in a greenhouse cucurbila pepo L. plants were grown and 2 C1 Cl 143-14 sprayed once prophylactically with an aqueous broth of the test-product containing 0.1 percent of active substance of the C1 compound 3. Two days after treatment the plants were infected with spores of Erysiphe cichoriacearum DC and after 12 C1 to 14 days inspected as to infestation with fungi. in com- 3 C1 151453 parison with the untreated control (0 percent effect) the effeet on the sprayed plants was 100 percent without phytotox- Q icity.

Br C1 EXAMPLES 4 ON 01 151453 The new carbamates of the Formulafl) show a pronounced, 1 strong effect against Gram-positive bacteria, particularly 01 against Staphylococci and Streptococci. They are also effective against pathogenic fungi, for example Trichophytan interl digitale.

lOl044 0177 The antibacterial activity in the dilution test was determined as follows: Bacteriostasis and bacteriocidal activity 20 mg of active substance were dissolved in 10 ml of propylene-glycol; 0.25 ml of this solution was added to 4.75 ml of sterile glucose bouillon and then further diluted in testtubes in a ratio of 1:10. These solutions were then inoculated with Staphylococcus aureus and incubated for 48 hours at 37 C. (Bacteriostasis). After 24 hours test-time one loop from these cultures was spread on to glucose agar plates and incubated for 24 hours at 37 C. (Bacteriocidal activity). After the times mentioned the following limit-concentrations were determined in ppm of the bacteriostasis and bacteriocidal activity, respectively:

In order to test the antimycotic effect a solution of 1 percent strength of an active compound in propylene-glycol was prepared and diluted with a 10 percent beer-wort solution in concentrations of 250, 100, 50, 30, 10, 3, 1 and 0.5 ppm. The determination of the fungistatic limit concentration gave the following values in ppm:

Compound No. Aspergillus Rhizopus niger nigricans 1 l 1 3 10 10 4 100 30 5 100 I00 15 100 =l0 16 100 EXAMPLE 5 In order to test the effect on gastropodes the following aqueous dilution series of an active substance concentration was prepared: 25, 12, 6, 4, 3, 2 and 1 ppm. Batches of five snails each (Australorbis glabratus) having a shell diameter of mm were put into each of these solutions for 24 hours at 20 22 C. They were then taken out and put for a further 48 hours in clear water with the addition of food. After this recuperation time the lethal rate was determined. For Compound 1 the lethal rate was 100 percent in a concentration of 1.5 PP

EXAMPLE 6 Mortalities with a concentration of 0.08% active substance Time Compound No. Larvae Mortality l5 Orgyia 5 days 80% 17 Orgyia 5 days 100% Epilachna 5 days 80% EXAMPLE 7 0 of active substance.

After a week the treated plants showed an infestation of only 5 percent as compared with a 100 percent infestation of the control plants.

FORMULATION EXAMPLES Dusting Preparations Equal parts of an active substance according to the invention and precipitated silicic acid are finely ground. By mixing with kaolin or talcum, dusting preparations can be prepared containing preferably l-6 percent of active substance. Spraying powders For the preparation of a spraying powder the following components are, for example, mixed and finely ground:

50 parts of active substance according to the present invention 20 parts of Hisil (highly adsorbant silicic acid) '25 parts of Bolus alba (kaolin) 3.5 parts of the reaction product from para-tertiary octylphenol and ethyleneoxide 1.5 parts of(sodium l-benzyl-2-steary1-benzimidazole-6,3'- disulphonate) Emulsion concentrates Readily soluble active substances may also be formulated as emulsion concentrates according to the following prescriptions:

20 parts of active substance 70 parts of xylene 10 parts of a mixture from a reaction product of an alkylphenol with ethyleneoxide and calcium dodecylbenzene sulphonate are mixed. On being diluted with water to the desired concentration a sprayable emulsion is formed.

I claim:

1. A compound of the formula a zn wherein n is an integer of 4 or 5 and 2 represents substituents which may be the same or different from one another and which are selected from the group consisting of methyl, methoxy, chlorine, bromine and nitro, at least three of said substituents being selected 'from the group consisting of chlorine and bromine.

2. The compound as claimed in claim 1 of the formula 3. The compound as claimed in claim 1 of the formula 5. The compound as claimed in claim 1 of the formula 6. The compound as claimed in claim 1 of the formula Br CH3 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 676 457 Dated July 11 1972 lnventofls) Adolf Hubele and Otto Rohr It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On the cover page, entry [73] should read Assignee: Ciba-Geigy AG, Basle, Switzerland Signed "and sealed this 27th day of November 1973.

(SEAL) Attest':

EDWARD M.PLETCHER,JR. 1 RENE D. TEGTMEYER Attesting Officer Acting Commissioner of Patents FORM PC4050 (10459) uscoMM-oc scam-P69 V U-S. GOVERNMENT PRINTING OFFCEI I965 0-366-334 

2. The compound as claimed in claim 1 of the formula
 3. The compound as claimed in claim 1 of the formula
 4. The compound as claimed in claim 1 of the formula
 5. The compound as claimed in claim 1 of the formula
 6. The compound as claimed in claim 1 of the formula 